.220 Swift ballistic coefficient chart
G1 and G7 ballistic coefficients for 13 .220 Swift factory loads from 40 to 55 grains, with the manufacturer's muzzle velocity and, where published, bullet length.
| Load | Weight (gr) | G1 BC | G7 BC | Velocity (fps) | Length (in) |
|---|---|---|---|---|---|
| Federal 40gr. V-Shok (P220B) | 40 | 0.221 | - | 4,250 | - |
| Hornady 40-grain V-Max Moly VX (8203) | 40 | 0.220 | - | 4,200 | 0.688 |
| Winchester 40-grain Ballistic Silvertip (SBST220) | 40 | 0.221 | - | 4,050 | - |
| Hornady 50-grain V-Max Moly VX- 83213) | 50 | 0.233 | - | 3,850 | 0.772 |
| Norma 50-grain Soft Point (15701) | 50 | 0.185 | - | 4,019 | - |
| Norma 50gr. Soft Point (20157012) | 50 | 0.185 | - | 4,019 | - |
| Remington 50-grain Pointed Soft Point (R220S1) | 50 | 0.175 | - | 3,780 | - |
| Remington 50-grain V-Max Boat-Tail (PRV220SA) | 50 | 0.239 | - | 3,780 | - |
| Winchester 50-grain Pointed Soft Point (X220S) | 50 | 0.200 | - | 3,870 | - |
| Federal 52-grain Speer TNT HP (P220V) | 52 | 0.239 | - | 3,830 | - |
| Federal 55-grain Trophy Bonded Bear Claw (P220T1) | 55 | 0.202 | - | 3,700 | - |
| Hornady 55-grain V-Max Moly VX (83243) | 55 | 0.258 | - | 3,680 | 0.811 |
| Norma 55gr. Oryx (20157032) | 55 | 0.185 | - | 3,373 | - |
Using these numbers
A ballistic coefficient describes how well a bullet keeps its speed against air resistance, compared with a standard reference projectile. G7 figures suit long, boat-tailed match and hunting bullets and stay more consistent across velocities; G1 figures are larger numbers for the same bullet and are what most manufacturers have published historically. Use whichever your calculator asks for, but never mix a G1 number with the G7 drag model.
Every load here is in the ballistic calculator's bullet library — search for it to build a range card in one step, then true the velocity against your own chronograph.